Vaio Laptop Keybaord Replacement

I recently split cofee over my keyboard and now a few keys are not working. Sony will not sell me a replacement keyboard unless I send my machine in for Repair ( approx £150 ). It clearly states that the keyboard only costs approx £25 but want the rest to fit it ( 10 Second job! ). I cannot locate another keyboard on the net. Does anybody know where I can purchase one??